Surface cleaning with concurrently usable prespray and rinse units

ABSTRACT

A soiled surface cleaning system is described for pre spraying soiled surface areas, and for rinsing and extracting the pre sprayed soiled surface areas, wherein the pre spraying of the soiled surface areas does not have to be stopped in order to perform the rinsing and extracting of the pre sprayed soiled surface areas. The system includes a prespray unit having a proportional pump driven by water from a water service line. The pump mixes the water with prespray and feeds the diluted prespray to a spray gun. The system also includes a rinse unit having a triplex pump that receives water from the water service line, increases the water&#39;s pressure, and feeds the pressurized water to an injector. The injector mixes the water with a rinse agent and feeds the diluted rinse agent to a nozzle arrangement on an extraction wand. In use, areas of the soiled surface are first pre sprayed with the diluted prespray. The diluted prespray is allowed to dwell on the pre sprayed areas. After the dwell time of the diluted prespray on a pre sprayed area has elapsed, the pre sprayed area is rinsed and extracted with the extraction wand. This system allows the prespray unit to continue pre spraying soiled areas at the same time as the rinse unit is rinsing and extracting pre sprayed areas having elapsed dwell times.

FIELD OF THE INVENTION

The present invention relates to an improved multi-functional cleaningmachine and method, and particularly, to a multi-functional carpet,stone, tile, and furniture cleaning machine and method for cleaningsurface areas in commercial, industrial, institutional, public, andresidential buildings.

BACKGROUND

Maintaining the cleanliness of commercial, industrial, institutional,public, and residential buildings is an ongoing effort. Various cleaningmachines have been devised to clean carpeted or tiled floors, stonefloors, furniture and the like.

A common way of cleaning soiled surfaces is by extracting the dirtymatter from a soiled surface. As disclosed in U.S. Pat. No. 3,883,301,issued to Emrick et al., a cleaning head 15 is used to spray a detergentsolution on areas of textile fabric, such as carpet, upholstery and thelike, and to vacuum the solution and soil from the sprayed areas.

However, as disclosed in U.S. Pat. No. 4,154,578, issued to Bane, someof the detergent solution sprayed on a carpeted surface is left with thecarpet fibers even after the surface is vacuumed with an extractor wand.This is because the detergent solution used to wash carpets is alkaline,while dirt is generally acidic. As a result, dirt is attracted to thealkaline residue left on the carpet. The alkalinity remaining with thecarpet fiber greatly accelerates and increases the rate of resoiling ofthe carpet. To solve this problem, Bane further sprays the carpet withan acid solution to neutralize the alkaline residue left on the carpetand then vacuums the acid solution from the carpet.

U.S. Pat. No. 6,880,191, issued to Bristor, discloses an extractioncleaning system that uses a spray gun and an extraction wand or tool.The spray gun is used to apply a prespray to a carpet. The prespray isallowed to dwell on the carpet for 5-15 minutes. After the dwell timehas elapsed, the extraction wand is used to apply a rinsing agent to thecarpet, and to extract the rinsing agent from the carpet.

In particular, Bristor discloses a container 11 for carrying prespraychemicals and rinse agents. In preparation for applying the prespray,Bristor connects a draw tube 64 to a supply tube 90 a extending into aprespray supply jar 76 a, and attaches a spray gun 100 to the distal endof a delivery hose (see FIG. 8). The diluted prespray is sprayed on anarea of the carpet. The prespray is permitted to dwell on the presprayed area for 5-15 minutes. Next, the draw tube 64 is switched fromthe supply tube 90 a to a supply tube 90 b. The second supply tube 90 bextends into a supply jar 76 b containing a rinse agent. In addition,the spray gun 100 is replaced with an extraction wand 114. After thedwell time has elapsed, the diluted rinse agent is sprayed on the presprayed area of carpet and extracted with the wand 114 (see FIG. 9).This cycle is repeated, area-by-area throughout the cleaning site 14until the job is completed.

A shortcoming with Bristor's cleaning operation is the time that aworker spends in repeatedly switching between supply jars and repeatedlyswitching between the spray gun and the extractor wand. Bristor'soperation would be more efficient if the series of starts and stopscould be eliminated. Bristor does not allow areas of carpet to be presprayed while areas of pre sprayed carpet are being rinsed. In Bristor,anytime a carpet area is being rinsed, another area of carpet cannot bepre sprayed, and anytime a soiled carpet is being pre sprayed, anotherarea of pre sprayed carpet cannot be rinsed. The step of rinsing cannotbe performed at the same time as another area of pre sprayed carpet isbeing rinsed. The cleaning process has to stop whenever the spray gunand extraction wand have to be swapped, and whenever the supply jarshave to be swapped. It would be more efficient if the switching betweendifferent jars of cleaning agents could be eliminated. Also, it would bemore efficient if the switching between the spray gun and the extractorwand could be eliminated. Elimination of the time directed to all thisswitching would result in a more efficient process.

Another problem with cleaning machines, which use extraction wands, ortools, is the time consumed in moving various hoses to the cleaningsite. At times, the hoses and cords get tangled and have to be sortedout thereby wasting time that could be used in a more beneficial manner.For example, Bane shows a mobile carpet-cleaning unit 11 that includesseveral reels, 16 through 19, which are suspended on a rod 22 andcontain various lengths and types of hoses required to clean carpets.These hoses have to be unwound from the reels and each end of each hosehas to be attached properly. It would be more efficient if some of thehoses could brought to a cleaning site with one end of each hose alreadyconnected to the components that make up cleaning apparatus.

SUMMARY OF THE INVENTION

Accordingly, the present invention has an object, among others, toovercome deficiencies in the prior art, such as noted above.

The present invention provides an integrated, multi-functional,surface-cleaning apparatus, suitable for use in the field of carpet,tile, stone, and furniture cleaning. To this end, and in accordance withthe principles of the invention, one aspect of the invention is animproved carpet-cleaning method and apparatus.

The improved carpet-cleaning apparatus includes a prespray unit and arinse unit. Each of the units is provided with water from a waterservice line at the cleaning site. The prespray unit includes awater-driven proportional pump for mixing a prespray with the water fromthe service line to provide a diluted prespray. The diluted prespray isdelivered to a spray gun and sprayed on areas of the carpet.

The rinse unit includes a motor-driven triplex pump for increasing thepressure of the water from the service line. Also, a chemical injectoris included for mixing a rinse agent with the pressurized water toprovide a diluted rinse agent. The rinse unit includes a bypass linethat allows the water from the triplex pump to bypass the chemicalinjector to provide a water only rinse. The diluted rinse agent or wateronly is delivered to an extraction wand and sprayed on pre sprayed areasof the carpet and immediately extracted using the extractor wandconnected to an extraction system.

The present invention is unlike the prior art extraction cleaners thatrequire the spray gun and the extractor wand to be switched during thecleaning process. In the present invention, the spray gun can be usedconcurrently with the extraction wand.

Another aspect of the cleaning apparatus is the inclusion of anadditional extraction wand or tool and an additional extraction systemto reduce the time expended in rinsing and extracting pre sprayed areasof carpet.

Another aspect of the instant cleaning machine is its mobility. All thecomponents of the instant cleaning machine can be moved to a cleaningsite at the same time. Most of components are mounted on a four-wheeledplatform cart. The extraction wands, extractor hoses and the solutionhoses can be placed on top of the components. One extractor hose isbundled with one solution hose. The cart allows all the components ofthe cleaning machine to be moved to, around, and from the cleaning sitesat a commercial, industrial, institutional, public, or residentialbuilding. Moreover, this arrangement allows easy access to thecomponents during the operation and maintenance of the machine.

Another aspect of the present invention has to do with the inclusion ofa pair of reels on the four-wheeled platform cart. One of the reels is adual hose reel that is used to carry a pair of long hoses and a pair oflong extension cords to the job site. The other reel is a single hosethat is used to carry the spray gun and spray gun hose. The dual hosereel allows fluids to pass through the reel between the hoses on thereel and the components mounted on the platform cart. Also, the dualhose reel has a passage that allows the extension cords to pass throughthe drum of the dual hose reel. An end of one of the hoses isconnectable to the water line of the water service of the buildinghousing the areas to be cleaned. An end of the other hose is run to adirty solution disposal site. One end of each of the extension cords isconnectable to the power service at the cleaning site.

Another aspect of the present invention is its use as a multi-functionalcleaning apparatus. In particular, a myriad of different cleaningextraction wands or tools can be used with the instant cleaningapparatus for cleaning different types of soiled surfaces.

Some of the potential features and advantages included in at least someof the embodiments of this invention, by way of example and withoutlimitations, include an improved cleaning method and apparatus that isable to clean more than one surface at a time, provides mobility of thecleaning apparatus, enhances the usefulness of the cleaning apparatus,is capable of spraying different cleaning solutions at the same time,reduces the costs associated with cleaning surfaces of a building, is ofrelatively simple design, is economical in manufacture and assembly, andreduces the harmful risks involved with cleaning such surfaces.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic flow diagram of the present invention.

FIG. 2 is a left side perspective view of the present invention.

FIG. 3 is a right side perspective view of the present invention.

FIG. 4 is a perspective view of the dual hose reel of the presentinvention.

FIG. 5 is a perspective view of the single hose reel of the presentinvention.

DETAILED DESCRIPTION OF THE INVENTION

The present invention is hereinafter described with reference to theaccompanying drawings, in which the preferred embodiment of theinvention is shown. This invention may be embodied in many differentforms and should not be construed as limited to the preferred embodimentset forth herein. Rather, the preferred embodiment is provided by way ofexample so that this disclosure will satisfy applicable legalrequirements. Like numbers refer to like elements throughout.

FIG. 1 shows a schematic flow diagram of the present invention. A waterdelivery hose 22 is connectable to a water line of the water service atthe cleaning site. The hose 22 delivers water through a dual hose reel30. From the dual hose reel, a first T-fitting 59 splits the waterbetween a prespray unit 2 and a rinse unit 4. The prespray unit is alow-pressure unit and the rinse unit is a high-pressure unit. Thefunction of the low-pressure unit 2 is to provide a diluted prespray forapplication on areas of soiled carpet. The function of the high-pressureunit 4 is to provide a diluted rinse agent, or a water only rinse, forapplication on pre sprayed areas of the soiled carpet.

In the prespray unit 2, water flows through a water hose 61 into aproportional pump 70. The proportional pump 70 siphons a prespray from acontainer 73 through a supply tube 71, and mixes the prespray with waterto generate a diluted prespray. From the outlet of the proportional pump70, the diluted prespray flows through a spray gun hose 85 on a singlehose reel 80 to a spray gun 86. The single hose reel 80 has a rightangle swivel fluid coupler 84 attached to an end of the single hosereel's axle. The coupler provides a fluid path between the outlet of theproportional pump 70 and an end of the spray gun hose 85. The functionof the spray gun 86 is to apply a diluted prespray to areas of soiledcarpet. Normally, the diluted prespray is allowed to dwell on the carpetfor a suitable dwell time to help loosen the dirt and soil hidden deepwithin the carpet to emulsify the grease, oils soaps, etc.

The rinse unit 4 includes a motor 88 driven triplex pump 89 and apressure-regulating unloader 92. Water flows from the water service lineto the triplex pump 89 and is discharged from the unloader 92. Thepressure of incoming service line water pressure is increased by settingand adjusting the pressure-regulating unloader 92 until the desiredsystem pressure is attained to rinse the pre sprayed areas of carpet.

From the unloader 92, the water flows through a 3-port ball valve 96 toeither a chemical injector 94, or to an injector bypass line 90. Thechemical injector 94 provides a diluted rinse agent, while the bypassline 90 provides a water only rinse.

The ball valve has a control member 97 for directing the water to eitherthe chemical injector 94 or to the bypass line 90. Specifically, whenthe control member 97 of the ball valve is turned in one direction,water from the pump 89 is allowed to flow to the chemical injector 94.Conversely, when the control member 97 is turned in the reversedirection, water from the pump 89 is allowed to flow to the bypass line90. Water flowing to the chemical injector 94 draws a rinse agent from acontainer 98 through a supply tube 99, mixes the rinse agent with thepressurized water, and delivers a diluted rinse agent through a pair ofrinse hoses 105 and 107 to a pair of extraction wands or tools 104 and106. Conversely, water flowing to the bypass line 90 is sent directlythrough the pair of rinse hoses 105 and 107 to the pair of extractionwands or tools 104 and 106 as a water only rinse. In the preferredembodiment, the extraction wands or tools are, for example and withoutlimitations, glide carpet tools, Part No. 10088A, manufactured by CFR, aTacony Corporation, Fort Worth, Tex.

A check valve 95, a T-fitting 157, a cross-fitting 158, and a pair ofself-sealing quick-disconnect couplers 162 and 163 permit the waterrinse only and the diluted rinse agent to flow in the appropriatedirections.

In particular, when the control member 97 is turned to permit the flowof water to the chemical injector 94, the diluted rinse agent is allowedto flow from the chemical injector, into the T-fitting 162, and out ofan opening in the T-fitting 157 to the coupler 162. At the same time,the diluted rinse agent is allowed to flow out of another opening in theT-fitting 157, into the cross-fitting 158, and out of an opening in thecross-fitting 158 to the coupler 163.

Further, when the control member 97 is turned to permit the flow ofwater to the bypass line 90, a water only rinse is allowed to flow fromthe bypass line 90, into the cross-fitting 158, and out of an opening inthe cross-fitting to the coupler 163. At the same time, the water onlyrinse is allowed to flow out of another opening in the cross-fitting158, into the T-fitting 157, and out of an opening in the T-fitting 157to the coupler 162. The check valve 95 prevents the water only rinsefrom flowing back into the chemical injector 94 from an opening in theT-fitting 157. Each of the rinse hoses 105 and 107 has a coupler at oneend for connecting the rinse hoses 105 and 107 to the mating couplers162 and 163, respectively.

A pressure gauge 93 is coupled to an opening in the cross-fitting 158 toindicate the pressure of the rinse fluid.

As further depicted in FIG. 1, the rinse hose 105 is connected to anextraction wand 104. The rinse hose 107 is connected to anotherextraction wand 106. Each of the extraction wands includes a nozzlearrangement (not shown) for applying the diluted rinse agent, or a wateronly rinse, on pre sprayed areas of the carpet 153 and 154.

As the diluted rinse agent, or the water only rinse, is applied to thepre sprayed areas of carpet, the prespray and loosened dirt are quicklyextracted from the carpet through extractor hoses coupled to a pair ofextraction systems. The extraction systems include a dirty solution tankassembly 100 (FIGS. 2 and 3) having two dirty solution tanks 112 and114. Each of the tanks 112 and 114 is connected to a respective one ofthe vacuum motors 116 and 118 by vacuum lines 115 and 117. The vacuummotor 116 is vented to the atmosphere by an exhaust line 121 connectedto a muffler 122. The vacuum motor 118 is vented to the atmosphere by anexhaust line 123 connected to a muffler 124. Further, each of theextraction wands 104 and 106 is connected to a respective one of theextractor hoses 108 and 110 and vacuum-pick up head (not shown). Each ofthe extractor hoses 108 and 110 has a coupler at one end for connectingthe extractor hoses 108 and 110 to the mating couplers 159 and 160,respectively. Further, each tank is provided with a manually operateddrain valve 138 and 139.

When the chamber 113 of the tank 112 is subjected to vacuum pressurefrom the vacuum motor 116, a suction force extends through the extractorhose 108, the extraction wand 104 wand and the wand's vacuum pick uphead to extract a dirty solution comprising the diluted prespray and thediluted rinse agent sprayed on the carpet along with the loosened dirtentrained in the carpet, all of which is deposited in the dirty solutiontank 112. The extractor hose 108 is coupled to the outside of the wallof the tank 112 near the top of a vertical wall of the tank. Inside thechamber 113 of the tank 112, a dirty fluid pipe 131 is coupled to theextractor hose 110 through a wall of the tank 114. The dirty fluid pipe131 extends into the chamber in a horizontal fashion. The end of thepipe 131 has a reducing T-section 133 that allows the dirty solution toflow out the bottom end and air to flow out the top end. A net 136covers the T-section to catch any large particles of dirt in the dirtywater. Further, inside the chamber 113 of the tank 112, a riser pipe 125extends into the chamber at a right angle to a wall of the chamber 113.The riser pipe 125 includes a horizontally mounted liquid-levelfloat-switch 128, which is electrically connected to a relay (not shown)that is operatively connected to a respective vacuum motor 116 toprevent the vacuum motor from being damaged by the dirty solution. Theriser pipe 125 is mounted in the mid-portion of the wall of the tank112. In operation, the float-switch 128 and relay function to actuateand de-actuate the vacuum motor 116. The extraction wand 106, extractorhose 110, vacuum hose 117, vacuum motor 118 and muffler 124 operate inthe same manner to extract a dirty solution from the carpet 154 into thedirty solution tank 114.

In the preferred embodiment, two discharge pumps 144 and 146 are used topump out the dirty solutions from the dirty solution tanks 112 and 114.Each of the tanks 112 and 114 is connected to a respective one of thedischarge pumps 144 and 146. A coupling 141 couples the input ofdischarge pump 144 to the dirty solution tank 112. Another coupling 143couples the input of the discharge pump 146 to the solution tank 114.One end of a discharge hose 145 is connected to the output of thedischarge pump 144. One end of a discharge hose 147 is connected to theoutput of the discharge pump 146. Inside the chamber 113 of the tank112, a filter 142 is coupled through the wall of the tank 112 to thecoupling 141. A similar filter is included in the chamber of the tank114. Each of the discharge hoses 145 and 147 is connected to a fitting149 in fluid communication with the dual hose reel 30. In FIG. 1, thefitting 149 is depicted as a T-fitting. However, a Y-fitting could besubstituted for the T-fitting if desired. The return hose 23 isconnected to the dual hose reel in fluid communication with theT-fitting 149. In operation, the discharge pumps 144 and 146 pump dirtysolutions from the solution tanks 112 and 114 through the dual hose reel30 to a return hose 23 that is connectable to a discharge site, forexample, a preexisting commercial drain, sewer line, commode or holdingtank.

As viewed in FIGS. 2 and 3, most of the components of the presentinvention mounted on or below a platform 13 of a four-wheel platformcart 12, The platform cart 12 is generally of conventional constructionand includes the platform 13, a tubular handle 16, and a toe plate 17.In operation, the portable cart provides a portable unit, which can bewheeled to a cleaning site. (It is noted that in this description, thehandle 16 is considered as being situated at the rear of the cart andthe toe plate 17 as being in the front of the cart.) All of thecomponents needed to clean a carpeted surface are mounted on theplatform of the cart with the exception of the extraction wands, therinse hoses, the extractor hoses for the extraction wands, and thecontainers of pre spray and rinse agent. Some of the components mountedon the top of the platform 13 are: a dual hose reel 30, a motor 88, atriplex pump 89, a chemical injector 96, a dirty solution tank assembly100, a single hose reel 80 with a proportional pump 70 attached thereto,and two discharge pumps 144 and 146. Two vacuum motors 116 and 118 (notvisible) with relays (not visible), two mufflers 122 and 123, and anelectrical wiring assembly 155 (not visible) are mounted to the bottomof the platform 13.

The dual hose reel 30 is preferably a reel, with one modification,produced by Cox Reels, Tempe, Ariz., and identified as Series1275-4-100. The dual hose reel 30 is mounted at the front of the cartbehind the toe plate 17. As depicted in FIGS. 3 and 4, the reel producedby Cox Reels was modified to include two holes (not visible) in the side32 of the reel 30. The holes allow an end of each extension cord 18 and19 to pass through the opening 38 of the drum 34 and out the side 32 ofthe reel. As depicted in FIG. 2, the reel 30 includes a gear arrangement37 for turning the reel 30 with a hand-crank (not shown).

In addition, the dual hose reel 30 includes a horizontally disposed axle42 extending transversely of a reel support frame 36. The axle is hollowexcept for a wall (not visible) that forms two open-ended chambers (notvisible) in the interior of the axle. The chamber located in the leftside of the axle is open at the left end of the axle. The chamberlocated in the right side of the axle is open at the right end of theaxle. The axle 42 includes a central portion and two end bearingportions that extend through bearing blocks 44 and 45 to support theaxle horizontally for rotation. Spaced opposed, right and left circulardiscs 32 and 33, respectively, concentric with the axle, are secured tothe central portion of the axle. A drum 34 concentric with and spacedfrom the axle extends between the discs 32 and 33 and has its lateralextremities secured to the interior surfaces of the left and right discs32 and 33. The delivery and return hoses 22 and 23, respectively, aresupported on the reel 30 and may be wound and unwound concurrently therefrom. So that water may be directed from the delivery hose 22 throughthe reel 30, the central portion of the axle is provided with a rightangle hose connector 46 that extends through an opening 38 in the drum34. The hose connector 46 is in fluid communication with the chamberformed in the left side of the axle. A right angle swivel fluid coupling51 is connected to the left end of the axle. The combination of the hoseconnector 46, the chamber in the left side of the axle, and the swivel51 form a first fluid conduit through the left side of the axle. Withthe delivery hose 22 connected to the hose connector 46, water flowingthrough the delivery hose 22 is directed through the first conduit,through a water shutoff valve 60, through a T-fitting 59, which splitsthe water flow to the proportional pump 70 via the hose 91 and to thetriplex pump 89 via the hose 61. A similar conduit is formed on theright side of the reel. Specifically, so that a dirty solution may bedirected to the return hose 23 through the dual hose reel 30, thecentral portion of the axle is provided with another right angle hoseconnector 48 that extends through the opening 38 in the drum 34. Thesecond connector is in fluid communication with the chamber formed inthe right side of the axle. Another right angle swivel fluid coupling 52is connected to the right end of the axle. A T-fitting 149 (orY-fitting) is connected to the swivel coupling 52 for connecting thedischarge hoses 145 and 147 to the dual hose reel 30. The combination ofthe hose connector 48, the chamber in the right side of the axle, theswivel 52, and the T-fitting 149 form a second fluid conduit through theright side of the axle. With the return hose 23 connected to the hoseconnector 48, a dirty solution flowing from the discharge pump 144 viathe discharge hose 145, and from the discharge pump 146 via thedischarge hose 147, is directed through the T-fitting 149, through thechamber in the right side of the axle, and out to a discharge site.

A sheath (not shown) encloses the delivery hose 22, the return hose 23,and two extension cords 18 and 19, is coiled on the dual hose reel 30,when the cleaning machine is not in use. As viewed in FIG. 4, the hoses22 and 23 and the cords 18 and 19 are unwound from the second reel. Thesheath functions to organize the hoses and cords into a single neat andtidy bundle that is conveniently wound and unwound and that prevents thehoses and cords from getting tangled. The length of each hose and eachcord is approximately 100 feet or 30 meters in length.

The extension cords 18 and 19 provide electricity to the electricalcomponents mounted on the platform 13. Each extension cord isconnectable to the electrical service at the cleaning site. The oppositeend of each extension cord includes an electrical socket 66 and 67. Aspointed out above, the dual hose reel 30 has two holes 54, which provideaccess to the inside of the drum 34. The holes 54 allow the sockets onthe extension cords to pass through the drum 34 and out the side 32 ofthe reel 30. This feature allows the extension cords 18 and 19 to bewound on the dual hose reel 30 with the sockets 66 and 67 located withinthe drum 34 of the dual hose reel.

Two ground fault circuit interrupters 62 and 64 are mounted on the dualreel support frame 36. Each interrupter has a plug 63 and 65. Oneinterrupter plug 63 is connectable to the socket 66 of the electricalcord. The other interrupter plug 65 is connectable to the other socket67 of the other electrical cord. In FIG. 1, opposed ends of theinterrupters 62 and 64, respectively, are depicted as connected to thewiring assembly 155.

Accordingly, the hoses 22 and 23 and the extension cords 18 and 19 donot have to be dragged to and around the work site. When not in use, thehoses and cords are neatly stored around the drum 34 of the dual hosereel 30. When the four-wheeled cart is rolled to a job area, the sheathof hoses and cords is simply unwound and each hose and cord is connectedto the appropriate source of water, disposal site, and power,respectively. When a carpet site has been cleaned, the hoses and cordsare disconnected from the site's water and power services, rewound onthe dual hose reel and the cart is moved to another cleaning site,returned to its original location. This feature of the present inventionprovides the advantage of not having to drag the hoses and cords whenmoving to, between, or from different locations.

Further, another aspect of the present invention is that when the hosesand cords are uncoiled, a cavity 35 (see FIG. 4) is created between thedrum 34 of the dual hose reel 30 and the toe plate 17 of the platformcart. The cavity provides a temporary storage place for the prespraycontainer 73 and the rinse agent 98.

The other reel mounted on the platform cart 12 is preferably aself-retracting single hose reel 80 produced by Cox Reels, andidentified as Series PLP-500 AL. As shown in FIGS. 2, 3 and 5, theself-retracting single hose reel 80 carries the proportional pump 70,the spray gun hose 85, and the spray gun 86. The single hose reel 80 ismounted on a reel support frame 79. The spray gun hose 85 is supportedon the reel 80 and may be wound and unwound on the axle of the reel. Thelength of the spray gun hose is approximately 50 feet or 15 meters inlength.

In particular, the single hose reel has spaced opposed, right and leftcircular discs 83 and 82, respectively, concentric with the axle, whichdiscs are secured to the axle of the reel. The left circular disc 82 hasan opening 81. A right angle swivel fluid coupling 84 is mounted on anend of the axle of the single hose reel 80. The distal end of the spraygun hose passes through the opening in the left circular disc 82 and isconnected to a port of the swivel 84. The outlet of the proportionalpump is connected to another port of the swivel 84. The swivel 84 allowsthe prespray to flow from the proportional pump 70 through the spray gunhose 85 to the spray gun 86. Accordingly, the spray gun hose does nothave to be dragged or carried to a cleaning site. Moreover at thecleaning site, the hose can be wound and unwound as needed.

The proportional pump 70 is preferably a pump produced by DemaEngineering Company, St. Louis, Mo., and identified as Model No. 573.Water flow through the pump housing serves as a power source that drivesa master piston to reciprocate up and down while a smaller chemicalsuction piston, which is attached to the master piston, follows to drawa measured amount of chemical cleaning agent into the suction section ofthe pump and releases the chemical into the water stream of the pumpwith each return stroke of the master piston. No electricity isrequired. The master piston reciprocates in direct proportion to theflow of water through the pump housing; the larger the flow rate, thequicker the master piston operates the suction piston. The flow raterange is 0.09 to 11 gallons per minute. The amount of chemical drawn oneach return stroke is regulated by a proportioning adjuster, whichlengthens or shortens the chemical reservoir that the chemical pistonplunges into on each intake stroke. The proportioning adjuster 72 has apercent scale (not shown) on one side and a ratio scale (not shown) onthe other and is set by turning the adjuster clockwise orcounterclockwise to match up with the desired scale. Turning theproportioning adjuster clockwise increases the amount of chemicaladditive. Turning the proportioning adjuster counter clockwise decreasesthe amount of chemical additive. An on/off valve 75 controls the pumpingaction of the proportional pump. When valve is turned on, the pump isturned on to draw the chemical into the proportional pump. In theoff-position, the pump is prevented from drawing the chemical. Theoperating pressure of the water is 2.9 to 85 pounds per square inch. Theinjection ratio of Model 573 is from 250:1 to 25:1 or 0.4% to 4% ouncesper gallon.

As shown in FIG. 2, other components mounted on the platform 13 includethe motor 88 and the pump 89 in operable communication with one another,the pressure-regulating unloader 92, the ball valve 96, the bypass line90, the chemical injector 94, the check valve 95, the pressure gauge 93,the cross-fitting 158, the T-fitting 157, and the couplers 162 and 163.In the preferred embodiment, the pump 89 is, for example and withoutlimitations, a triplex design, direct-drive plunger pump manufactured byCat Pumps, Minneapolis, Minn., Model No. 2SF22ELS. The pump 89 candeliver up to 1500 psi at 2.2 gallons per minute. The unloader 92 isused to set the pressure of the water discharged by the triplex pump. Apressure gauge 93 is included for indicating the pressure of the water.

In the preferred embodiment, the chemical injector 94 is preferablymanufactured by Dema Engineering Company, St. Louis, Mo., and identifiedas Model No. 202 B. Inline chemical injectors function to inject fluidsinto lines conveying liquid under pressure. In this instance, theinjector is a jet pump. The liquid under pressure, usually water, entersa nozzle at the inlet of the chemical injector and accelerates into ajet through the nozzle. This high velocity jet creates a vacuum, whichcauses fluid to be drawn through a supply tube and into the injector.The mixture of water and fluid then flows into a diverging (venturi)passage. In effect, the fluid is drawn into the water line.

The chemical injector 94 has a water flow adjusting or bypass screw 101and a fine metering adjustment screw 102. To actuate the injector, thewater flow adjusting or bypass screw is turned clockwise until the rinseagent begins to draw from the container 98. After the rinse agentreaches the injector, the feed rate may be adjusted to the desired rateby turning the water flow adjusting screw. For low injection rates, thewater flow adjusting screw is set for more injection than required; thenthe fine metering screw is turned clockwise to reduce the injection rateto the desired rate. If the metering screw is clockwise to the placewhere it will not turn anymore, no rinse agent will be injected.

Further, as shown in FIGS. 2 and 3, other components mounted on theplatform cart 12 include the dirty solution tanks 112 and 114, thevacuum motors 116 and 118 (not visible), the mufflers 122 and 124, andthe discharge pumps 144 and 146.

In the preferred embodiment, the dirty solution tanks 112 and 114 aremounted side-by-side within a U-shaped metal housing 109 on top of theplatform 13. Each of the tanks is provided with an access port andaccess cover 120. Bulkhead fittings 119 are used to ensure that theconnections through the walls of the tanks are watertight and airtight.In the preferred embodiment, the liquid-level float-switch 128 is, forexample and without limitations, Model No. M8700, manufactured by theMadison Company, Branford, Conn. In the preferred embodiment, thesolid-state relay is, for example and without limitations, Model No.SNC-R2025-511, manufactured by Ametek National Controls Corporation,West Chicago, Ill. In the preferred embodiment, the filter 142 is, forexample and without limitations, manufactured by Flow Ezy Filters, Inc.,Ann Arbor, Mich.

In the preferred embodiment, the vacuum motors 116 and 118 (not shown)are mounted on the bottom of the platform 13 and are, for example andwithout limitations, manufactured by Ametek.

In the preferred embodiment, the mufflers 122 and 124 (not shown) aremounted on the bottom of the platform 13 are, for example and withoutlimitations, Vaculine™ Model No. 765500, manufactured by CanaplasIndustries Ltd, Barrie, Ontario, Canada.

In the preferred embodiment, discharge pumps 144 and 146 are, forexample and without limitations, manufactured by Flojet, Foothill Ranch,Calif. Each discharge pump has a switch (not shown) to actuate andde-actuate the pump.

The following describes an example of how the preferred embodiment,illustrated in the accompanying figures and/or described above, is usedby three workers to clean carpets in a hotel. In this example, the guestrooms are situated on either side of a corridor, which is approximately200 feet in length.

The platform cart is rolled to the middle of the corridor. There, thefirst worker goes to the dual hose reel and holds onto the end of thesheath covering the bundle of hoses and cords on the dual hose reel. Atthe same time the second worker pulls the cart toward one end of thecorridor near the door of the last room located at this end of thecorridor. The cleaning process begins at this end of the hallway. As thecleaning process progresses, the cart will be pushed toward the oppositeend of the corridor, stopping near each guest room door until theopposite end of the corridor is reached.

The first worker walks into the nearest guestroom with the end of thebundle. There the first worker proceeds to connect the delivery hose inthe bundle to the source of hot water under the bathroom sink by:shutting off the valve connected between the hot water line coming outof the wall and the water-supply tube running to the sink faucet;disconnecting the water-supply tube from valve; connecting one end of anadapter hose to the valve; connecting the other end of the adapter hoseto the delivery hose; and turning the valve back on, thereby providinghot water at around 80 psi to the prespray and rinse units on the cart.Next, the first worker takes the end of the return hose in the bundleand places it inside the bathroom commode.

While the first worker is connecting the delivery and return hoses, thesecond worker has been preparing the cart. In particular, the secondworker would have placed the prespray and rinse agent containers in thecavity between the toe plate and the drum. Also, the second workershould have connected each circuit interrupter plug to a respectiveextension cord socket protruding from the end of the dual hose reel.After this, the second worker prepares the prespray and rinse units by:placing the prespray supply tube in the prespray container, placing therinse agent supply tube in the rinse agent container, and unwinding thespray gun hose and priming the spray gun nozzle. The proportioningadjuster is adjusted to a flow rate appropriate for the surface beingcleaned. In this example, the flow rate is set at around 1:33 to 1:22depending on the appearance of the carpets. The spray gun is ready forpre spraying the carpets.

After finishing with the delivery and return hoses, the first workerassists the second worker in coupling the rinse hoses to the couplers onthe T-fitting and the cross-fitting, and in connecting the extractorhoses to the dirty solution tanks. Then the control member on the ballvalve is turned to allow water to flow into the chemical injector andthe unloader is adjusted to provide an operating pressure of around 250to 300 psi. Then, all the fluid hoses and fluid connections are checkedfor leaks.

Next, the machine's motor driven triplex pump, the vacuum motors and thedischarge pumps are connected to a source of electricity. This isaccomplished by: identifying two 20-amp outlets in and near the room inwhich the delivery hose is connected to the water service line. Usually,the receptacles in a room are not on the same circuit as the receptaclesin the hallway. Hence, the first worker will plug one of the extensioncords into a receptacle in the room and the other extension cord into areceptacle in the hallway. Then, the second worker will turn on theground fault circuit connectors and test the operability of theelectrical components. It should be recognized that the electricalcompatibility of the power available at a cleaning site and the powerrequirements of the machine would have been checked out prior tobringing the machine to the cleaning site.

While the first and second workers have been preparing the machine, thethird worker has been preparing the guest rooms, starting with rooms atthe end of the hallway where the cart is located. For example, the thirdworker has been going from room to room, opening doors, making sure thatthere is sufficient light in each room, lifting any lightweightfurniture off the floor, and rearranging furniture to provide paths forefficiently pre spraying and moving the extraction wands over thecarpet.

After rooms in the vicinity of the cart have been prepared, the thirdworker takes the spray gun and starts pre spraying the rooms that havebeen prepared, as well as the portion of the hallway in back of thecart, which can be reached with the spray gun.

After the prespray has been on a carpet for about 10 to 15 minutes, thepre sprayed carpet is ready to be rinsed and extracted. The second andthird workers prime the solution hoses, and adjust the chemical injectorfor the appropriate rinse, e.g., water or diluted rinse agent. Theystart with the areas of carpet that are most distant from the entrydoor. It may be that each worker will enter the same room or separaterooms, or one worker may rinse and extract the pre sprayed portion ofthe hallway. This depends on the arrangement of the entry doors and thesize of the rooms along the corridor. For example, there may only beone, or as many as four rooms, that are reachable from the cart by thespray gun and extractor wands. As the first and second workers cleantheir way back toward an entry door, the first worker moves the carttoward the next entry door.

After pre spraying the rooms reachable by the spray gun, the thirdworker determines whether the cart may be moved. In order to pre sprayanother room, the spray gun must be able to reach inside the room. Thefirst worker will move the cart when there is sufficient slack in thehoses attached to the extractor wands for the spray gun to pre spray thenext room.

The third person is responsible for pushing the cart toward the oppositeend of the hallway until all the guest rooms are pre sprayed and rinsed.At some point, the cart will pass by the water and electrical sources onits way to the last set of rooms at the opposite end of the hallway. Ifat anytime, after the cleaning process has started, the cart is notready to be pushed to the next location, the third worker uses the timeto prepare further guest rooms for cleaning, to return moved items totheir original position in the cleaned rooms, or to insure that thehoses are not in the way of the first and second workers.

A significant improvement provided by the present invention over priorart extraction cleaning machines is the combination of a low-pressureline for operating a prespray unit and a high pressure line foroperating a rinse unit. Both lines are connectable to the same source ofwater. The low-pressure line allows one worker to pre spray a soiledcarpet with a spray gun. The high-pressure line allows another worker torinse pre sprayed areas of carpet with an extractor wand. Thiscombination allows both units to operate concurrently. In the Bristorpatent (U.S. Pat. No. 6,880,191), a spray gun and an extraction wandcannot be used concurrently. The spray caddy provides only one fluid toone cleaning tool at a time. In the present invention, the spray gun hasits own dedicated fluid line, and the extractor wand has its owndedicated fluid line. As a result, these cleaning tools are operableconcurrently, and at different pressures. The present invention has theadvantage of being more efficient in that the carpet or some othersurface may be cleaned using both tools at the same time.

The preferred embodiment illustrated in the accompanying figures and/ordescribed above is merely exemplary and is not meant to limit the scopeof the invention. It is to be appreciated that numerous embodiments,and/or arrangements to the preferred embodiment have been contemplatedas would be obvious to one of ordinary skill in the art with the benefitof this disclosure. All variations, arrangements, and/or modificationsof the preferred embodiment that read upon the appended claims areintended and contemplated to be within the scope of the invention.

In particular, the preferred embodiment has been described as being forcleaning soiled carpeted or textured surfaces. In general, the pressureof the water used in rinsing carpeted and textured surfaces is betweenabout 250 psi and about 500 psi. Other surfaces are rinsed withpressures below 250 psi and above 500 psi. In this instance, thepreferred embodiment is a multi-functional cleaning machine, which hasthe capacity to clean a myriad of soiled surfaces other than carpetedsurfaces. An intended function of the preferred embodiment, of cleaningdifferent types of soiled surfaces is achievable by simply substitutingthe extraction tools 104 and 106 with alternate tools compatible withthe surface to be cleaned, setting the water pressure pumped out of thetriplex pump 89 to a pressure suitable for rinsing the surface to becleaned, and setting the ball valve 96 to allow the surface to be rinsedwith either a diluted rinse agent or a water only rinse.

For example, a process for cleaning hard surfaces, such as porcelain andceramic tile with sanded grout lines, includes pre spraying soiled tileand grout with a diluted alkaline based prespray, letting the dilutedprespray dwell up for approximately 15 minutes, and applying a wateronly rinse with pressures between about 800 psi and about 1500 psi tothe pre sprayed tile and grout and immediately extracting the dirtysolution from the tile and grout. An extraction tool for cleaning hardsurfaces, such as tile and grout, is the Turbo Hybrid model manufacturedby the Turbo Force International Company, Glendale, Ariz.,

Another example relates to cleaning upholstered fabric, or fabric suchas, curtains and the like. A process for cleaning fabrics includes prespraying soiled fabric with a special solution designed for the fabricand soil condition for emulsifying the soil in the fabric, andextracting the soil with a gentle controlled water only rinse using aspecial extraction tool. The pressure of a water only rinse is generallyabout 100 psi. An extraction tool for cleaning upholstery, sheers, andgeneral spotting is a combination hand tool, Part No. 10224A,manufactured by the CFR.

Other examples of alternate extraction wands or tools that can besubstituted for the extraction wands 104 and 106 include a specialpurpose hand tool, CFR Part No. 10225A, for cleaning stairs, officepanels, fabric wall coverings and other large flat fabric coveredsurfaces. Another company, Hydro-Force Manufacturing, Salt Lake City,Utah, manufactures tools, Models AR52 and AR 54, for cleaning countertops, around toilets, and shower stalls.

Accordingly, as used herein and the appended claims, the preferredembodiment can be utilized to clean a variety of floor surfaces,including but not limited to carpets, rugs, ceramic tile, stone, vinyl,terrazzo, wood floors, and concrete surfaces. Additional surfaces thatcan be cleaned with the preferred embodiment include walls, countertops, shower/bathroom surfaces, stairways, and upholstered furniture orfabric, such as curtains and the like. What all of the above surfaceshave in common is that each surface is cleanable using a form of waterextraction. Hence, although the couplers 159, 160, 162 and 163 aredescribed as connectable to a CFR model extraction tool, any of aplurality tools are usable for use with the preferred embodiment toclean any of a myriad of soiled surfaces or fabrics. The preferredembodiment is capable of providing the requisite water pressure and typeof rinse that is suitable to the surface or fabric intended to becleaned, and is connectable to a tool appropriate to perform the rinsingand/or extracting functions.

Further, modifications to the preferred embodiment may also bepracticable. One alternative embodiment of the cleaning machine is asmaller cleaning machine for use in cleaning surfaces in, for example,domestic residences. A smaller version of the preferred embodiment isconnectable to only one wand and comprises all the components of thepreferred embodiment mounted on a smaller platform cart, except for oneof the extraction systems. In particular, the following components areeliminated: the dirty solution tank 114, the vacuum motor 118, themuffler 124, the discharge pump 146, and the hoses 115, 117, 121, 123,145 and 147 used with these components. Further, the T-fitting 157 isreplaced with an elbow fitting and the coupler 162 is eliminated.

Another alternative embodiment to the preferred embodiment is a cleaningmachine for use in pre spraying different types of surfacessimultaneously with different diluted presprays. Such a machine could beformed by the inclusion of an additional prespray unit in parallel tothe prespray unit in the preferred embodiment.

In another embodiment, the configuration of the cleaning machine canvary significantly and substantially. For instance, the vacuum motorsand mufflers can be located on the top of the platform 13 mounted on ashelf protruding from the tank assembly 100 instead of to the bottom ofthe platform 13. Further, the specifications of the machine components,such as the motor and the triplex pump used in the rinse unit, can alsovary.

Still further, it is contemplated that the extraction system 100 of thepresent invention can be operated independently of the prespray unit andrinse units of the preferred embodiment for extracting an excess amountof water caused by a burst water line, or some other water catastrophe.

Additional advantages and modifications will readily appear to thoseskilled in the art upon reading this Detailed Description. Therefore,the invention, in its broader aspects, is not limited to these specificdetails, representative apparatus and methods, and illustrative examplesshown and described. It should be recognized that other components couldbe substituted for the particular model numbers identified above.Accordingly, departures may be made from such details without departingfrom the spirit or scope of the inventor's general inventive concept,which as described above, comprises a prespray unit applying a presprayon soiled surfaces at substantially the same time as a rinse unit isapplying a rinse to pre sprayed soiled surfaces, wherein the inputs ofboth units are connected to a common source of water, and wherein therinse unit is operated at a higher pressure than the prespray unit.

I claim:
 1. A soiled surface cleaning apparatus, comprising: a lowpressure prespray unit for producing a diluted prespray for applicationon soiled surfaces, including: a proportional pump for pumping aprespray into a stream of water, said proportional pump having, a firstinlet for receiving water from a water service line, a second inlet forreceiving a prespray, wherein said second inlet of said proportionalpump is connectable to a source of prespray by a supply tube inserted ina container containing a prespray, and an outlet for providing a dilutedprespray, wherein said proportional pump is driven by a stream of waterfrom said water service line for pumping a prespray into said stream ofwater, wherein said prespray is mixed with said stream of water, andwherein a diluted prespray is provided at said outlet of saidproportional pump; and a high pressure rinse unit for providing a rinsefluid for rinsing pre sprayed soiled surfaces, including: a combinationof a motor driven triplex pump and a pressure regulating unloader forsetting the pressure of water having, an inlet for receiving water froma water service line, and an outlet for delivering water at pressureshigher than that of the pressure of the water in said water serviceline; a connecting line having an input and an output, said connectingline input for receiving water from said outlet of the triplex pump andunloader combination, and said connecting line output for providing awater rinse; wherein said prespray unit is operable to provide a dilutedprespray to soiled surfaces at substantially the same time as said rinseunit is operable to provide a rinse to pre sprayed soiled surfaces. 2.The soiled surface cleaning apparatus of claim 1, wherein said rinseunit further comprises, a ball valve having an inlet, two outlets, and acontrol member, said ball valve inlet for receiving water from theoutlet of the triplex pump and unloader combination, said control memberfor selectively directing the flow of water to either of said outlets ofsaid ball valve, and one of said ball valve outlets in fluidcommunication with said inlet of said connecting line, wherein saidcontrol member is used to direct the flow of water to said connectingline; a chemical injector having two inlets and an outlet, one of saidchemical injector inlets for receiving water from the other of the twooutlets of said ball valve, wherein said control member is used todirect the flow of water to said chemical injector, the other of saidchemical injector inlets for receiving a rinse agent, wherein said otherinlet of said chemical injector is connectable to a source of rinseagent by a supply tube inserted into a container containing a rinseagent, and said chemical injector for providing a diluted rinse agent,wherein said chemical injector accelerates the water from said ballvalve outlet into a jet creating a vacuum for drawing said rinse agentinto said chemical injector wherein the drawn rinse agent mixes withwater, and wherein a diluted rinse agent is provided at said chemicalinjector outlet; a check valve having, an inlet coupled in fluidcommunication to said outlet of said chemical injector, and an outlet; aT-fitting having three openings, a first T-fitting opening coupled influid communication with said check valve outlet; a cross-fitting havingfour openings, a first cross-fitting opening in fluid flow communicationwith said output of connection line, a second cross-fitting opening influid flow communication with said a second T-fitting opening, and athird cross-fitting opening in fluid flow communication with a pressuregauge; a first self-sealing quick-disconnect coupler in fluidcommunication with a fourth cross-fitting opening; and a secondself-sealing quick-disconnect coupler in fluid communication with athird T-fitting opening, wherein said control member functions to directeither a water only rinse or a diluted rinse agent to said first andsecond couplers.
 3. The soiled surface cleaning apparatus of claim 2,wherein said diluted prespray is provided to a spray gun for prespraying a diluted prespray on soiled surfaces, and wherein said wateronly rinse or a diluted rinse agent is provided to an extraction toolconnectable to either one of said quick-disconnect couplers for rinsingpre sprayed soiled surfaces, further comprising, an extraction systemconnectable to said extraction tool for extracting a dirty solution frompre sprayed surfaces, including, a dirty solution tank connectable to asuction portion of said extraction tool, a vacuum motor coupled to saiddirty solution tank for extracting a dirty solution from pre sprayed andrinsed surfaces through said suction portion of said extraction toolinto said tank; and a dirty solution pump for discharging said dirtysolution from said dirty solution tank.
 4. The soiled surface cleaningapparatus of claim 3, further comprising: a platform cart, wherein saidproportional pump, said motor driven triplex pump, said chemicalinjector, and said extraction system are mounted on said platform cart.5. The soiled surface cleaning apparatus of claim 4, further comprising:a dual hose reel mounted on said platform cart for storing a deliveryhose, a return hose, and extension cords; a delivery hose; a returnhose; a pair of extension cords; wherein one end of said delivery hoseis connectable to said water service line, and wherein one end of saidreturn hose is connectable to a disposal site; first fluid conduit meansincluded in said dual hose reel for directing water through said dualhose reel; second fluid conduit means included in said dual hose reelfor directing a solution through said dual hose reel; wherein said firstfluid conduit means has one end connected the distal end of saiddelivery hose; wherein said second fluid conduit means has one endconnected the distal end of said return hose; wherein said first fluidconduit means has an opposite end connected to said inlet of saidproportional pump and to said inlet of said triplex pump and unloadercombination; wherein said second fluid conduit means has an opposite endconnected to said dirty solution pump; wherein said proportional pumpand said triplex pump are in fluid communication with said deliveryhose; a channel included in said dual hose reel allowing the distal endof each extension cord to pass through said channel, wherein eachextension cord has an end connectable to an electrical service line at acleaning site, and wherein each extension cord has a distal endconnectable to a wiring assembly mounted on said platform cart; a singlehose reel for storing a spray gun hose, said single hose reel mounted onsaid platform cart; a spray gun hose having one end connectable to aspray gun and the distal end protruding from an opening in a side ofsaid single hose reel; a swivel means mounted on one end of an axle ofsaid single hose reel, said swivel means coupling said proportional pumpto said distal end of said spray gun hose, said swivel means having afluid passage, wherein one end of said fluid passage is in fluidcommunication with said distal end of said spray gun hose, and whereinthe opposite end of said fluid passage is in fluid communication withsaid outlet of said proportional pump.
 6. The soiled surface cleaningapparatus of claim 1, further comprising, a spray gun connectable tosaid output of said proportional pump for pre spraying soiled surfaceswith said diluted prespray; and a rinsing tool connectable to saidoutput of said connection line for rinsing pre sprayed surfaces with awater rinse.
 7. The soiled surface cleaning apparatus of claim 2,wherein said diluted prespray is provided to a spray gun for prespraying a diluted prespray on soiled surfaces, and wherein said wateronly rinse or a diluted rinse agent is provided to a first extractiontool connectable to one of said quick-disconnect couplers and a secondextraction tool connectable to the other of said quick-disconnectcouplers for rinsing pre sprayed soiled surfaces, further comprising, afirst extraction system connectable to said first extraction tool forextracting a dirty solution from pre sprayed surfaces, including, afirst dirty solution tank connectable to a suction portion of saidextraction tool, a first vacuum motor coupled to said first dirtysolution tank for extracting a dirty solution from pre sprayed andrinsed surfaces through said suction portion of said first extractiontool into said tank; and a first dirty solution pump for dischargingsaid dirty solution from said dirty solution tank, a second extractionsystem connectable to said second extraction tool for extracting a dirtysolution from pre sprayed surfaces, including, a second dirty solutiontank connectable to a suction portion of said second extraction tool, asecond vacuum motor coupled to said second dirty solution tank forextracting a dirty solution from pre sprayed and rinsed surfaces throughsaid suction portion of said second extraction tool into said tank; anda second dirty solution pump for discharging said dirty solution fromsaid dirty solution tank, wherein both of the extraction tools areusable at the same time on different pre sprayed soiled surfaces and atsubstantially the same time as the spray gun is being used to pre spraysoiled surfaces.
 8. The soiled surface cleaning apparatus of claim 7,further comprising: a platform cart, wherein said proportional pump,said motor driven triplex pump, said chemical injector, and said firstand second extraction systems are mounted on said platform cart.
 9. Thesoiled surface cleaning apparatus of claim 8, further comprising: a dualhose reel mounted on said platform cart for storing a delivery hose, areturn hose, and extension cords; a delivery hose; a return hose; a pairof extension cords; wherein one end of said delivery hose is connectableto said water service line, and wherein one end of said return hose isconnectable to a disposal site; first fluid conduit means included insaid dual hose reel for directing water through said dual hose reel;second fluid conduit means included in said dual hose reel for directinga solution through said dual hose reel; wherein said first fluid conduitmeans has one end connected the distal end of said delivery hose;wherein said second fluid conduit means has one end connected the distalend of said return hose; wherein said first fluid conduit means has anopposite end connected to said inlet of said proportional pump and tosaid inlet of said triplex pump and unloader combination; wherein saidsecond fluid conduit means has an opposite end connected to said dirtysolution pump; wherein said proportional pump and said triplex pump arein fluid communication with said delivery hose; a channel included insaid dual hose reel allowing the distal end of each extension cord topass through said channel, wherein each extension cord has an endconnectable to an electrical service line at a cleaning site, andwherein each extension cord has a distal end connectable to a wiringassembly mounted on said platform cart; a single hose reel for storing aspray gun hose, said single hose reel mounted on said platform cart; aspray gun hose having one end connectable to a spray gun and the distalend protruding from an opening in a side of said single hose reel; aswivel means mounted on one end of an axle of said single hose reel,said swivel means coupling said proportional pump to said distal end ofsaid spray gun hose, said swivel means having a fluid passage, whereinone end of said fluid passage is in fluid communication with said distalend of said spray gun hose, and wherein the opposite end of said fluidpassage is in fluid communication with said outlet of said proportionalpump.
 10. A soiled surface cleaning apparatus, comprising: a lowpressure prespray unit for producing a diluted prespray for applicationon soiled surfaces, including: a proportional pump for pumping aprespray into a stream of water, said proportional pump having, a firstinlet for receiving water from a water service line, a second inlet forreceiving a prespray, wherein said second inlet of said proportionalpump is connectable to a source of prespray by a supply tube inserted ina container containing a prespray, and an outlet for providing a dilutedprespray, wherein said proportional pump is driven by a stream of waterfrom said water service line for pumping a prespray into said stream ofwater, wherein said prespray is mixed with said stream of water, andwherein a diluted prespray is provided at said outlet of saidproportional pump; a high pressure rinse unit for providing a rinsefluid for rinsing pre sprayed soiled surfaces, including: a combinationof a motor driven triplex pump and a pressure regulating unloader forsetting the pressure of water having, an inlet for receiving water froma water service line, and an outlet for delivering water at pressureshigher than that of the pressure of the water in said water serviceline; a connecting line having an input and an output, said connectingline input for receiving water from said outlet of the triplex pump andunloader combination, and said connecting line output for providing awater rinse; wherein said prespray unit is operable to provide a dilutedprespray to soiled surfaces at substantially the same time as said rinseunit is operable to provide a rinse to pre sprayed soiled surfaces; adual hose reel mounted on a platform cart for storing a delivery hose, areturn hose, and extension cords; a delivery hose; a return hose; a pairof extension cords; wherein one end of said delivery hose is connectableto said water service line, and wherein one end of said return hose isconnectable to a disposal site; a first fluid conduit included in saiddual hose reel for directing water through said dual hose reel; a secondfluid conduit included in said dual hose reel for directing a solutionthrough said dual hose reel; wherein said first fluid conduit has oneend connected the distal end of said delivery hose; wherein said secondfluid conduit has one end connected the distal end of said return hose;wherein said first fluid conduit has an opposite end connected to saidinlet of said proportional pump and to said inlet of said triplex pumpand unloader combination; wherein said second fluid conduit has anopposite end connected to said dirty solution pump; wherein saidproportional pump and said triplex pump are in fluid communication withsaid delivery hose; a channel included in said dual hose reel allowingthe distal end of each extension cord to pass through said channel,wherein each extension cord has an end connectable to an electricalservice line at a cleaning site, and wherein each extension cord has adistal end connectable to a wiring assembly mounted on said platformcart; a single hose reel for storing a spray gun hose, said single hosereel mounted on said platform cart; a spray gun hose having one endconnectable to a spray gun and the distal end protruding from an openingin a side of said single hose reel; a swivel device mounted on one endof an axle of said single hose reel, said swivel device coupling saidproportional pump to said distal end of said spray gun hose, said swiveldevice having a fluid passage, wherein one end of said fluid passage isin fluid communication with said distal end of said spray gun hose, andwherein the opposite end of said fluid passage is in fluid communicationwith said outlet of said proportional pump.